package com.atguigu.lease.web.admin.custom.converter;

import com.atguigu.lease.model.enums.BaseEnum;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.converter.ConverterFactory;
import org.springframework.stereotype.Component;

import java.util.Arrays;

@Component
public class StringToBaseEnumConverterFactory implements ConverterFactory<String, BaseEnum> {
    @Override
    public <T extends BaseEnum> Converter<String, T> getConverter(Class<T> targetType) {

        return new Converter<String, T>() {
            @Override
            public T convert(String source) {
                //targetType.getEnumConstants() Class有一个方法：getEnumConstants()  可以获取这个Class中枚举常量数组
                return Arrays.stream(targetType.getEnumConstants()).filter(t -> {
                    return source.equals(""+t.getCode());
                }).findFirst().orElseThrow(IllegalArgumentException::new);
            }
        };
    }
}